Piston-ring.



E. KOTTUSCH.

PISTON RING.

APPLICATION FILED IUNEYZI. 1915.

1 172,369. Patented Feb. 22, 1916.

UNITED. STATES Emit. Ko'rT'UscIr, or CHICAGO. ILLINOIS. ASSIGNOR T ARTHUR E.

' CONGRESS PAR ILLINOIS.

PATENT Orr n-3E.-

STENZEL, or

PISTON-RING.

i Application filed June2l, 1915. Serial Not-15,220.

To all {loll-01h Ha/ my Concern Be it known that I. EMU. Ko'rruscii, .a sub ect of the Emperor of Germany-p resulmg at 2354 North Clark st'i'eet. in the city piston rings and more particularly to rings Of that class which are adapted to be used in internal combustion motors.

The objects of my invention are to so construct the joint portion of the ring that a gas tight joint is secured withoutinterfering with the limited circumferential expansion or construction of the ring. to make the segmental insert-separate and detachable from the remainder-of the ring so that it may be replaced if worn, damaged or broken and to form the end edges of the segmental insert and the slots in which it fits so as to extend obliquely. These and other objects I accom plisli as set forth in the following specification and as more fully and particularly pointed out in the appended claim reference being had to the accompanying drawings in V which a preferred embodiment of my in- -\'0Xltl0ll is shown.

In the drawings: Figure 1; is a side elevation of my improved piston ring, the segmental. insert being shown in dotted lines. Fig. 2. is afi edge view of my improved piston ring in a compressed condition. Fig. 3, is an edge view similar to Fig. 2, with the piston ring in expanded or uncompressed 'conditionQ Fig. 4. is an enlarged side view of thesegmental insert detached from the ring. Fig. 5, is an edge view of the segmental insert shown inFig. t.

In referring to the preferred embodiment of my improved piston ring .as shown in the accompanying drawings in detail like nuwith the side walls thereof-.iinparzrlle lsplanes: with the side surfaces of. the: ring and .to

form said slots of even throughout. end wall at the inner termination ofeach slot. obliquely outward or at an angle to the end edge of the ring. that is to-extend said end wall s'liae'onally outward and away from said end edge of the ring. I

The ign'iental insert 4:, is preferably con strurted substantially as shown in Figs. 4

Specification of Letters Patent. Paig nt df b and 5. the top and bottom surfaces being in parallel planes, and the side edges being curved to approximately correspond to the curvature of the rings The end edges of the insert are cut to extend obliquely and so as to lit, against and contact throughout.

with the oblique end walls of the slots when p the ring is compressed. Preferably ,I permanently secure one end of the insert in one of the'slots 3, by pins or rivets 5. which are fitted through the-transverse openings 6, in the insert shown in] Fi j 4. The opposite end of the insert projects into the slot in tlie opp0site endofthe' ring andis free to slide therein, asthe'r'in'g is. contracted or expanded in circumference;

If desired the insert may bema'de of very.-

strong. practically unbreakable tough rigid metal such as steel,v while the ring'may be formed of a spring metallike cast'1r0n. The insert is made sutnciently long and the slots sufficiently. deep to eliminate any.

possibility of the ring'being expandedor opened far enough to entirely withdraw the m which it projects.

While I have illustrated and described a preferred form of construction for carryint: my invention into etIect. this iscapable of a wide range of ivariation. altcratiom' modification and change without departing from the spirit of my invention I therefore do not with to be limited to the construction herein shown and described, but desire to avail n'zyself of all such variations, alterations. modifications and changes as fairly fall within the scope of the appended claim or may be construed to be within the scope thereof by involving the doctrine of equivaients.

I-Vhat I claim as my invention and desire to secure by Letters Patent is:

A ring of the class described, comprising an annular rii'ig, having longitudinahslots free sliding end of the insert from the slot inthe opposed end thereof, said slots being considerably deeper on the outer vsurface than the inner surface and being of uniform Width throughout andhaving parallel side to i'ectin into 'the's'lot inone end of'the ring end r veps for securing the opposite egrtremicy of theinsert in th'ejother slot, sald segme'ntel, ii1sert having inner and outer eurYedsurfaces. corresponding to the curve 15 of {inner and outer, surfaces of the ring ring, parallel side sur fa ce s and oblique end edges corresponding to the oblique end walls of the vslots and adaptedto contact throughout With said oblique'end' walls when the ring is in compressed condition.

In testimony whereof I hate hereunto v aflixed my" name in the' presence of two witnesses. v EMIL KQTTUSQH .WVitnesses: I JOSEPH JAxv1E I RoB'r. KLo'rz. 

